Sorter for paper-pulp and the like.



J. M. L. SPA NGENBERG.

SORTER FOR PAPER PULP AND THE LIKE- APPLICATION FILED JAN. 18, 1915.

Patented Dec. 7, 1915.

9L MW M n 7 ml 0 w L 4 y 7 fi I31 5 w M. l fi fl 5 W 7 9 P. 2% 2 w V MW 7, 0 0 2 Z VJ? W ran sraans earner ora ion.

JOHN MAGNUS LARSSON sranennnnne, or ronsnaen, SWEDEN.

SORTER FOR PAPER-PULP AND THE LIKE.

Specification of Letters Patent.

Patented Dec. 7, 1915.

Application filed January 18, 1915. Serial No. 2,950.

a receptacle, the side Walls of said cylinder consisting of a perforated mantle through which the fibers pass from without inward, and the interior of which'is in communication with a suction or exhaust pipe and which sorters are provided with members movable within the said cylinder serving to cause a momentary change in the direction of flow of the current to prevent the holes in the mantle or casing being clogged by fibers and the like.

In previously'known devices forthis purpose the said members arranged within the cylinder have been constructed as longitudinal vanes supported by a shaft rotatably arranged within said drum. In accordance with the present invention on the contrary the said member consists of a longitudinal body or drum eccentrically arranged within the said cylinder, which body or drum in cross section has a polygonal form with straight or curved sides and eventually also rounded corners. And further,

stationary longitudinal blades are arranged in the space between themantle of the perforated drum and the stirring member. ,By

this arrangement a better effect is gained than with the apparatuses of the same type before known. I I

In the accompanying drawing is illustrated by way of example a form of construction of the invention, used in an apparatus of the kind described in my United States Patent No. 1042724.

Figure 1 is a longitudinal section of the apparatus, and Fig. 2 shows the, same in cross section along the dotted line in Fig. 1. Fig. 3 shows in cross section diagrammatically other modified forms of the stirring member. 1 I

In the different figures similar parts are indicated with the same characters of reference.

The invention is first described with reference to Figs. 1 and 2.

Thesorter consists of a straining drum 4.

rotating in the well known manner in a receptacle 3 provided with an inlet opening 1 for the material to be treated, consisting of pulp suspended in water, and a suction exit 2. The circumference of said drum 4 consists of a mantle of perforated plate or metal wire tissue. VVithinthe said drum 4: are arranged the above-mentioned stirring member for producing changes in the direction of current, which member, according to the form of construction shown in the drawing, consists of a'longitudinal drum or body of polygonal for instance pentagonal cross section mounted on a rotatable shaft 9. The shaft 9 can be arranged concentrically with the axis of thedrum 4. as shown in Fig. 3, but according to the form of construction illustrated in the other figures on the draw.- ing it is arrangedeccentrically in relation to the axis of the drum, in order to provide a space between the rotating vanes 7 and the mantle or casing of the drum 4 at the top of the same fora spurt pipe 10 arranged within the drum, which pipe 10 at its upper side facing the casing of the drum is provided with a number of apertures or perf0- rations, sothat when water is supplied'to the said pipe 10 through the inlet 11, the water spurts out in a fine spray against the perforated mantle of the drum, whereby the Within ranged by which the space between the perforated mantle of the drum 1 and the stirring member7 is subdivided in several sections, whereby the desired effect of the rotation of the body 7 :will be increased.

According to Figs. 1 and 2 one such blade is arranged on each side on the pipe 10 and fastened to the end wall 33 of the receptacle 3 and projecting into the drum lin the same way as said pipe 10. For rotating the drum 4 and thestirring' member .7 which may be rotated in the same or in opposite direction, means of any suitable construction may be used, which however donot form object for the present invention.

By way of example I will, inthe following describe a ent No. 1,042,724. The drum 4 is at one of its ends provided with a hollow axlejour} nal 12, which axle-journal 12 passes through the end of the receptacle 8 and is rotatably carried by bearings 13. In order to bring about a tight fit between the said shaft the end wall of the rece ptacle 3, packing de vices 14 of some suitable construction are provided.

At the opposite end the prolonged part 1% of the drum 4: is rotatably carried by wooden blocks 16 or the like arranged in the receptacle 3. The shaft 9 passes through the hollowaXle-jou'rnal 12 and is rotatably carried at this end by a bearing 17 and at the opposite end said shaft is 'journaled in a hearing 18.

For driving the shaft 9 and the stirring member 7 carriedby it, there is arranged at one end of the shaft 9 a belt-pulley 19, which is set in rotation in the usual manner by means of a belt (not shown) The drum 4 is alsodriven fromthe said shaft by means ofa toothed Wheel 20 mounted on the shaft 9, which toothed wheel 2O engages with a toothed wheel 21, mounted on one end of a rotatable shaft 22, on the other end of which shaft 22 there is a toothed wheel 23 engagwith a toothed wheel 2% mounted on the axle-journal 12 of the drum The gearing isarranged in such a manner that the shaft 9 rotates at a comparatively great speed, e. g. 80 revolutions per minute, while the drum 4 rotates comparatively slowly, e. g. L revolutions per minute. i

In order to bring about a tight fit of the outer end'of thehollow axle-j ournal 12 there is, a ringshaped disk 25 tightly mounted on the shaft 9,which disk 25 is pressed against the end of the said axle-journal by means of a ring 28 and springs 26 fitted onto the screw-bolts 27, which screw-bolts are at one of their ends screwed into the nave of the wheel and at their other ends are providedwith nuts, between which nutsand the ring28 the springs are located. The said springs press against the ring 28, which ring 28 bears against and slides on the disk 25 and presses the latter against packingring 22' arranged between the en d of the axle-j ournal and the disk 25. As will be obvious from the above, the ring 28, through its connection with the screw-bolts 2 7, takes part in the rotation of the drum, while on the otherhandthe disk 25is prevented from taking part the said rotation by means of an arm 31 engaging with it, which arm 31 is attached to the standard 30 supporting the bearing of the shaft ,9. In this way the open axle-journal 12 is tightly closed in spite of the fact that the rotating shaft 9 Pass n t rees ec nt e y bcalted in relation to thesame. As the otherparts of as retreat a'ae tion, a description of them and the manner in which theapparatus otherwise is shown adapted to an apparatus of previously known type.

In Fig. 3 is shown by way of example in full line the cross sections 7 of a stirring member, the sides of which are conveX and in the same Fig. 3 is shown with dotted lines a form of stirring member 7', the sides of which are concave.

It may be understood that a stirring member of any polygonal cross section may be used, the above stated forms being described and illustrated only by way of examples. The device in question works in the following manner: l/Vhile the fibers or paper pulp deposited in the water, which nearly completely covers the straining drum, is being sucked through the perforated walls of the slowly rotating drum 4, the shaft 9 and the stirring body 7 rotate at a comparatively high speed. Hereby are brought about by the stirring body a change in the direction of flow of the liquid, 2'. 6. there is as the member 7 rotates brought about a flow of the current from within to without alternately with the normalflow from without to within, whereby a stoppage of the openings of the perforatedwalls of the drum is prevented. a

Having thus described my invention, I declare that what I claim is:

1. In an apparatus of the class described, a. receptacle, a perforated drum, rotatably arranged in the same, through which drum the mass passes in the direction from without inward, a stirring, member arranged within said drum, means for rotating said drum, and means for rotating the stirring member, said stirring member consisting of a longitudinal body, the cross section of whichhas the form of a polygon, said stirring members being arranged eccentrically with the axis of the perforated drum.

2. In an apparatus of the class described, a receptacle, a perforated drum, rotatably arranged in the same, through which drum the mass passes in the direction from without inward, a stirring member arranged within said drum, means for rotating said drum and means for rotating the stirring member, said stirring memberconsisting of a longitudinal body, the cross section of which has the form of a polygon, longitudinal blades being arranged at intervals in the space between the mantle of the perforated drum and the stirring member, said blades being stationary. V

3. 'In an apparatus of the class described, a receptacle, a perforated drum, rotatably arranged in the same, through which drum the mass passes in the direction from without inwardja stirring member arranged within said drum, means (for rotating's'aid drum and means for rotating the stirring said blades being fastened to one end of the 10 member, said stirring member consisting of receptacle and projecting into the drum. a longitudinal body, the cross section of In witness whereof I have hereunto set which has the form of a polygon, said stirmy hand in presence of two witnesses.

ring members being arranged eccentrically with the axis of the perforated drum, longi- JOHN MAGNUS IATARSSON SPANGENBERG' tudinal stationary blades being arranged in Witnesses: the upper part of the space between the HUGO GRAAs, perforated drum and the stirring member, HUBERT GRAAs.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

